Move to Protect World's Only Women's Language

languages > endangered
"It is used among women of the Yao ethnicity in Jiangyong County of Hunan." I had never even heard of a women's language before. I wonder how it's related to other Yao languages (the common language for both sexes) - I assume it belongs to the Miao-Yao linguistic family (it would be really interesting if it didn't though!)